This paper studies the evolution of the full-time/part-time wage differential among Italian women for the period 1993-2004. A generalized Heckman selection model is applied to estimate the wage equations, controlling for endogeneity in the second step. An observed part-time wage penalty is...

This paper estimates the determinants of the size of oil tanker spills. In the lit- erature, spill size has been estimated but the results are not very strong. A review of the existing results is provided and the determinants of spill size using a sample selection model are estimated. Estimates...